Chair-leg extension.



H. N. ENHOLM.

CHAIR LEG EXTENSION.

APPLICATION FILED JUNE 1. 1917.-

1,251,649. Patented Jan. 1,1918.

HILIYIER N. ENHOLM, OF LOMAX, ILLINOIS.

CHAIR-LEG EXTENSION.

Specification of Letters Patent.

Patented Jan. 1, 1918.

Application filed June 1, 1917. Serial No. 172,239.

To all whom it may concern.-

Be it known that I, HILMER N. ENHOLM, a citizen of the United States,residing at Lomax, in the county of Henderson and State of Illinois,have invented certain new and useful Improvements in Chair-Leg EX-tensions, of which the following is a specification.

This invention relates to improvements in devices adapted to be attachedto the front legs of a chair to enable the chair to be tilted to disposethe seat at any desired inclination, and has for one of its objects tosimplify and improve the construction and increase the efliciency andutility of devices of this character. 7

Another object ofthe invention is to provide a simply constructed devicewhich may be readily applied without material structural change tochairs and similar devices of various forms and shapes, and transferredfrom one chair to another.

WVith these and other objects in view, the invention consists in certainnovel features of construction, as hereinafter shown and described andthen specifically pointed out in the claims; and in the drawingsillustrative of the preferred embodiment of the invention Figure 1 is aside elevation of a convenventional chair with the device applied to Oneof the legs; 7 I

Fig. 2 is an enlarged side elevation of the improved attachment partlyin section;

Fig. 3 is a section enlarged on the line 33 of Fig. 1;

Fig. 4 is a transverse section on the line 4-4 of Fig. 2;

Fig. 5 is an enlarged detached view of one of the trigger devices.

The improved device comprises a stock 10, preferably tubular to decreasethe weight without reducing the strength, and provided with a laterallydirected rib 11 at one side, the rib being provided with a plurality ofnotches or recesses 12 at spaced intervals in its lower porticu. Acushion of yieldable material, such as hard rubber represented at 13 issecured in the lower end of the stock 10, and forms a cushion bearing toengage the floor upon which the chair rests. The member 10 is arrangedto slide vertically in a supporting bracket, the latter adapted to beattached to the front legs of a chair. The bracket device comprises anupper member let having a guideway portion 15 through which the stock 10moves, the bracket device having a channel through which the rib 11moves. The bracket device likewise includes a lower member representedas a whole at 16, and having a guideway 17 for the stock 10. The members1416 are connected by a supporting memberlS asshown. Two of the stockdcvlces and their supporting brackets will be employed, one for eachfront leg of the chair, and the body portions lt lb of the brackets areformed to engage the chair legs, one of which is represented at 34;. Theleg 34E of the chair employed as an illustration is square, and thebracket member 14 isformed with webs 19 disposed atright angles to eachother and apertured to receive holding screws to enable the webs to befastened to the chair leg, while the bracket portion 16 is likewiseformed with branching webs 20 for the same purpose.

The web portions l920 will be formed to fit the shape of the chair legto whichlthey are attached, whether round, square or other form, as willbe obvious.

The bracket member 16 is preferably longer than the bracket member 14,so'that when the chair is supported in tilted position as shown in Fig.1, the stock 10 willv be substantially perpendicular.

The bracket member 16 is formed with a relatively large opening or slot21, and pivoted at 22 within the slot 21 is a stop pawl 23, the point24: of the pawl engaging in the recesses 12 one ata time to lock thestock member 10 in the guide brackets at any desired point. At itsopposite end the pawl device 23 is supplied with a pull wire 25 leadingupwardly to a point convenient to the seat portion 26 of the chair. Thepawl 23 is provided with a holding spring 27 which operates to hold thepawl yieldably with its point 24 in engagement with the adjacent recess12. The bracket member 14: is provided with a guide slot 28 throughwhich the wire 25 leads. By this arrangement it will be obvious that thestock 10 may be adjusted vertically through the bracket members, andlocked at any desired point within the range of the recesses 12.

Attached to the seat 26 of the chair at convenient points are triggerdevices, one of which is represented in Fig. 1, and each comprising abase portion 28 and an operating lever 29, the latter pivoted at 30 inthe base 28. The pull wire 25 is attached at its upper end asrepresented at 31, to the pull lever 29. The spring 27 will besufiiciently strong to maintain the pull wire 25 relatively taut and thepull lever 29 in its lower position. lVhen the chair is to be adjustedthe operator simply movesthe lever devices 29 upwardly to release thepawl devices 23 and permit the members 10 to fall by gravity therequired distance, and then when the lever devices 29 are released'thesprings 27 will automatically cause the pawl devices 23 to engage-withthe adjacent-notches or recesses 1:2, and thus lock the stock-members 10in the desired position, and hold the chair seat 26 at the required angle orinclination.

At its upper end eachof the stock members lO is-provided with a lateralprojection 32in advance of the rib 11, while the bracket me aber lat isprovided with a socket indicated at 38 to'receive-the projection 32 whenthe stoclrmember 10 is moved into its lower position. The projection 32thus operates as a. stop to prevent the stock member from movingdownwardly beyond a certain predetermined position, to prevent the stockdevice from dropping from the bracket in event of the pawl device 23being retained in withdrawn position.

The stock device 10 together-with its rib 1.1 and the bracket membersincluding the connecting bar 18 will be of metal, as light as possibleconsistent with the strains to which it will be subjected, and may beplatechjapanned or otherwise ornamented or protected.

It will be understood that two of the base membersQS and the operatinglevers 29-will be'employed, one foreach of the stock devices 10.

copiesiotthispatent may be obtained for Having thus described theinvention, what is claimed as new is:

l. A device of the class described, comprising a bracket including aconnecting member and upper and lower members of unequal length andadapted to be connected to a chair leg and each provided with aguideway, a stock slidable through said guideways and maintained in asubstantially vertical position when the chair is tilted, and means forlocking said stock inposition relative 'to said bracket.

2. A device of the class described comprising a bracket-including upperand lower connected members adaptedtobe attached to a chair leg and-eachhaving a guideway, a.

able through said guideways and having a plurality of notches,apawldevicecarried by one of-said bracket members and engageable withsaid notchesone at a time, anda pull inemberconnected to said pawldevice and extending-through said guide-recess.

In testimony whereof I affiX my signature. HILMER'N. [n

five cents each, by addressing the Commissioner of'fPatents,

Washington, D. G.

